<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>课后作业</title>
    <script>
        var name = prompt('您的姓名是：')
        var age = prompt('您的年龄是：')
        var sex = prompt('您的性别是：')
        alert('您的姓名是：' + name + '\n' + '您的年龄是：' + age + '\n' + '您的性别是：' + sex)
    </script>
</head>

<body>

</body>

</html>